Students at Franklin Regional Middle School were temporarily moved to the high school Thursday morning.According to a statement on the school district’s website, the students were moved because of a problem with a mechanical system in the middle school building.The mechanical issue led to a small amount of chlorine spilling. A spokeswoman says students were being kept out of the building Thursday out of an abundance of caution.VIDEO: Watch David Kaplan's report from MurrysvilleHazmat crews were called to investigate the spill and determined there were no major safety issues.All after-school activities were suspended Thursday.School officials expect all operations to return to normal Friday.Follow updates from Pittsburgh's Action News 4 reporter David Kaplan on Twitter @DKaplanWTAE.36405212

MURRYSVILLE, Pa. —

Students at Franklin Regional Middle School were temporarily moved to the high school Thursday morning.According to a statement on the school district’s website, the students were moved because of a problem with a mechanical system in the middle school building.

The mechanical issue led to a small amount of chlorine spilling. A spokeswoman says students were being kept out of the building Thursday out of an abundance of caution.